Display device or portion thereof with graphical user interface



This application claims the benefit of U.S. application Ser. No. 16/398,145, filed 29 Apr. 2019, U.S. application Ser. No. 16/398,148, filed Apr. 29, 2019, the disclosure of each of which is incorporated, in its entirety, by this reference.

The FIGURE is a front view of a display device or portion thereof with graphical user interface.

The broken lines illustrate portions of the display device or graphical user interface that form no part of the claimed design. 

CLAIM The ornamental design for a display device or portion thereof with graphical user interface, as shown and described. 